November 18, 1997: Harvey Pulliam was traded by the Colorado Rockies to the Arizona Diamondbacks for Chuck McElroy.[1]

November 18, 1997: Mike Lansing was traded by the Montreal Expos to the Colorado Rockies for Jake Westbrook, John Nicholson (minors), and Mark Hamlin (minors).[2]

November 18, 1997: Quinton McCracken and Bryan Rekar were drafted by the Tampa Bay Devil Rays from the Colorado Rockies as the 4th and 38th picks in the 1997 expansion draft.[3][4]

December 4, 1997: Darryl Kile was signed as a Free Agent by the Colorado Rockies.[5]

December 10, 1997: Mark Hutton was traded by the Colorado Rockies to the Cincinnati Reds for Curtis Goodwin.[6]

December 10, 1997: Dave Veres was traded by the Montreal Expos with Mark Hamlin (minors) to the Colorado Rockies for Terry Jones and a player to be named later. The Colorado Rockies sent Mark Mangum (minors) (June 5, 1998) to the Montreal Expos to complete the trade.[7]

June 2, 1998: Matt Holliday was drafted by the Colorado Rockies in the 7th round of the 1998 amateur draft. Player signed July 24, 1998.[8]

June 2, 1998: Juan Pierre was drafted by the Colorado Rockies in the 13th round of the 1998 amateur draft. Player signed June 4, 1998.[9]

June 9, 1998: Kurt Abbott was traded by the Oakland Athletics to the Colorado Rockies for a player to be named later. The Colorado Rockies sent Ara Petrosian (minors) (June 18, 1998) to the Oakland Athletics to complete the trade.[10]

July 31, 1998: Ellis Burks was traded by the Colorado Rockies to the San Francisco Giants for Darryl Hamilton, Jim Stoops, and a player to be named later. The San Francisco Giants sent Jason Brester (minors) (August 18, 1998) to the Colorado Rockies to complete the trade.[11]